html,body {
  background-color: #f6acc9;
  height: 100%;
  overflow: hidden;
}
.mascot {
  max-width: 20%;
  height: auto;
  opacity: 0.5;
  display: block;
  transition: .5s ease;
  backface-visibility: hidden;
  position : relative;
  right: -70%;
  top: 60%;
}

.mascot:hover {
  opacity: 0.98;
}

.container{
  height: 100%;
  display:block;
  overflow:auto;
}